Charles H. Spurgeon on Psalms 135:7

He causeth the vapours to ascend, etc. Dr. Halley made a number of experiments at St. Helena as to the quantity of water that is daily evaporated from the sea, and he found that ten square inches of the ocean's surface yielded one cubic inch of water in twelve hours —a square mile therefore yields 401,448,960 cubic inches, or 6,914 tons of water. From the surface of the Mediterranean Sea during a summer's day there would pass off in invisible vapour five thousand millions of tons of water. This being only for one day, the quantity evaporated in a year would be 365 times greater, and in two thousand years it would amount to four thousand billions of tons, which evaporation would in time empty the Mediterranean Sea; but we have good reason for believing that there is as much water there now as in the time of the Romans, therefore the balance is kept up by the downpour of rain, the influx of the rivers, and the currents from the Atlantic. Now let us consider the amount of power required for all this evaporation. Mr. Joule, whose experiments have given to the world so much valuable information, says that if we had a pool of water one square mile and six inches in depth to be evaporated by artificial heat, it would require the combustion of 30,000 tons of coal to effect it; therefore to evaporate all the water that ascends from the earth it would take 6,000,000,000,000 (six billion) tons, or more than all the coal that could be stowed away in half a dozen such worlds as this; and yet silently and surely has the process of evaporation been going on for millions of years. —Samuel Kinns, in "Moses and Geology", 1882.